短语词组短语BRACE RAIL PIPE 大括号铁路管;支撑轨管;振奋铁喉管rail brace 轨撑guard rail brace 护轨撑end arch rail brace 顶棚外端梁支柱rigid rail brace 固定式轨撑guard against error rail brace 护轨撑 返回 brace rail